Tamarack is a cone-bearing tree native to the northern forests of North America. You may also see it sold or called eastern larch, American larch, or hackmatack.1Missouri Botanical Garden. Larix laricina Unlike pines and spruces, it is one of the few conifers that goes bare every winter.2Missouri Botanical Garden. Larix laricina Its toughness in cold, soggy ground has also made it useful to people for centuries, from medicine to railroad ties.
Why Tamaracks Turn Gold and Drop Their Needles
Tamarack belongs to the pine family, in the larch group, and its scientific name is Larix laricina.3University of Minnesota. What Is a Tamarack Tree? Identification and Uses Botanists call it a deciduous conifer, meaning a cone-bearing tree that drops all its needles each year.4Missouri Botanical Garden. Larix laricina In autumn it behaves much like a maple. As days shorten and temperatures fall, the tree draws nutrients, mostly nitrogen, out of its needles and stores them for spring.5Flathead Conservation District. What Is a Tamarack Tree? Identification and Uses The needles then turn yellow and drop.6Flathead Conservation District. What Is a Tamarack Tree? Identification and Uses That recycling is a real advantage on poor bog soils.
A bare tamarack is not dead. Small bumps along the twigs are where next year’s needles will grow. If the twigs bend rather than snap and the buds look plump, the tree is alive. A tamarack in trouble usually shows browned needles in summer, not just bare branches in winter.
How to Identify a Tamarack
Needles are the quickest clue.
- Size and feel: soft and flexible, about 1 inch long, sometimes up to 2 inches.7Knowlesville Nature. What Is a Tamarack Tree? Identification and Uses
- Tufts: they grow in clusters, usually 10 to 20 per cluster, though some clusters hold up to 60.8Knowlesville Nature. What Is a Tamarack Tree? Identification and Uses
- Color: bluish green in spring and summer, yellow in fall.9Knowlesville Nature. What Is a Tamarack Tree? Identification and Uses
- Twigs: covered with tiny bumps or spurs where the needle tufts grow.10Minnesota Department of Natural Resources. Tamarack (Larix laricina) seed collection guide
Cones confirm it. They are small, about 1 to 2 centimeters, roughly the size of a fingertip, and they sit upright on the branches.11Knowlesville Nature. What Is a Tamarack Tree? Identification and Uses Young cones are reddish purple, pink, or yellowish green, and they turn brown when ripe.12Natural Resources Canada. Tamarack Mature cones are oval with up to about 20 smooth scales.13Natural Resources Canada. Tamarack They can stay on the branches for about two years, so old brown cones help identify a bare tree in winter.14Knowlesville Nature. What Is a Tamarack Tree? Identification and Uses
To tell tamarack from spruce and pine, start with the season: spruce and pine needles stay green all winter, while tamarack goes bare. Pine needles come in small bundles of 2 to 5 rather than dense tufts. Spruce needles are stiff, sharp, and grow singly. Run a hand over a tamarack and the needles feel soft.
European or Japanese larches are often planted in parks and look similar. Tamarack’s cones are notably small, under an inch, while other larches usually have larger ones. Location helps too, since native tamarack usually grows in wet ground rather than on lawns.
Where Tamaracks Grow
Tamarack has one of the widest ranges of all North American conifers, stretching from the Atlantic to central Alaska.15USDA Forest Service. Tamarack In Canada it grows from Newfoundland west to the Yukon.16USDA Forest Service. Tamarack In the US it reaches south to Minnesota, Wisconsin, northern Ohio, Pennsylvania, New Jersey, Connecticut, and Maine, with pockets in the mountains of West Virginia and Maryland.17USDA Forest Service. Tamarack A separate population grows in interior Alaska.18USDA Forest Service. Tamarack
Within that range, it typically grows in cold bogs and wet forests with acidic soils.19Lady Bird Johnson Wildflower Center. Larix laricina It tolerates soggy, acidic, cold soil better than the upland trees nearby, so it is often more common in peat bogs than the trees around it.20USDA Natural Resources Conservation Service. Tamarack Plant Guide It can survive temperatures as low as minus 85°F.21Extension. Tamarack Farther north, it also grows on drier, moist upland soils.22USDA Natural Resources Conservation Service. Tamarack Plant Guide A stand of tamaracks is therefore a good hint that the ground underneath is wet, even in a dry spell when the surface looks firm.
The Tamarack’s Role in Bogs and Burned Forests
Tamarack is a pioneer tree, one of the first to move into open ground.23US Forest Service Research and Development. Larix laricina, tamarack It is often the first tree to invade open bogs, even growing on moss mats floating over water.24US Forest Service Research and Development. Larix laricina, tamarack It also readily reseeds burned forest and abandoned fields.25Wikipedia. Larix laricina But it cannot tolerate shade.26wildadirondacks.org. Trees of the Adirondacks: Tamarack As the peat firms up, other conifers eventually replace it.27US Forest Service Research and Development. Larix laricina, tamarack A stand of young tamaracks hints at a past fire, logging, or an abandoned field, because they need full sun to get started.
Few animals eat much of the tree. Snowshoe hares eat its twigs and bark, and porcupines eat the inner bark.28US Forest Service Research and Development. Larix laricina, tamarack Spruce grouse and some other grouse readily eat its needles and buds.29US Forest Service Research and Development. Larix laricina, tamarack Moose and white-tailed deer generally avoid it.30US Forest Service Research and Development. Larix laricina, tamarack
For landowners, that means tamarack seedlings may survive where deer browse other trees. Hares can still damage young trees, so protect seedlings where hares are common.
Traditional Indigenous Uses
The Ojibwe name for tamarack means “swamp tree.”31NativeTech. What Is a Tamarack Tree? Identification and Uses Fine roots were used to sew birch bark, and the wood made arrow shafts.32Silvics of North America. Larix laricina The Ojibwe boiled stripped roots to make woven bags for wild rice and herbs, and used large roots to sew canoe edges.33NativeTech. What Is a Tamarack Tree? Identification and Uses The roots suited sewing because they are long, thin, and flexible, and they hold up in water. The Cree have used tamarack for toboggans, snowshoes, canoes, and firewood.34NativeTech. What Is a Tamarack Tree? Identification and Uses Cree goose-hunting decoys made from tamarack twigs are among its best-known uses.35NativeTech. What Is a Tamarack Tree? Identification and Uses
Bark and needles were traditional medicines. The Chippewa applied chopped inner bark to burns.36wildadirondacks.org. Trees of the Adirondacks: Tamarack The Abnaki and Algonquin made cough remedies from bark, roots, or needles.37wildadirondacks.org. Trees of the Adirondacks: Tamarack The Potawatomi and Menomini used inner bark poultices on wounds and inflammation, and as medicine for horses.38NativeTech. What Is a Tamarack Tree? Identification and Uses These are traditional uses, not tested treatments, so talk to a doctor before trying any.
Tamarack Wood for Building and Railroads
Tamarack is called the densest softwood in North America.39Quebec Wood Export Bureau. Tamarack – Quebec Wood Export Bureau It resists bending and compression, sometimes comparably to hardwoods, and it holds its shape well as it dries.40Quebec Wood Export Bureau. Tamarack – Quebec Wood Export Bureau It also resists rot without chemical treatment, though some sources rate it only moderately durable.41Quebec Wood Export Bureau. Tamarack – Quebec Wood Export Bureau The trade-offs are that it needs pilot holes for nails and screws and dries slowly.42Quebec Wood Export Bureau. Tamarack – Quebec Wood Export Bureau
Most railroads before 1920 used tamarack ties.43Mesabi Tribune. What Is a Tamarack Tree? Identification and Uses No state supplied more early railroad ties than Minnesota, with its cedar and tamarack.44Mesabi Tribune. What Is a Tamarack Tree? Identification and Uses Curved “knees” cut from root and trunk joints were used in wooden ships.45Silvics of North America. Larix laricina
Today the lumber suits outdoor projects like fence posts, decks, and raised beds. Predrill to avoid splitting, and watch for resin pockets and cross-grain when sawing. Let the boards dry slowly to limit warping.
Growing a Tamarack in Your Yard
Tamarack is rarely planted as an ornamental, but it has real potential because it grows fast and has bright fall color.46U.S. Department of Agriculture, Forest Service. Silvics of North America It suits suburban yards but is not suitable as a shade tree on city streets.47U.S. Department of Agriculture, Forest Service. Silvics of North America Seedlings need full sun and steady moisture.48USDA Natural Resources Conservation Service. Plant Guide: Tamarack (Larix laricina) Young trees can die from drought, drowning, too little light, or seedling rot.49USDA Natural Resources Conservation Service. Plant Guide: Tamarack (Larix laricina) So plant in full sun with consistently moist soil, and give trees wide spacing.
A low, damp corner or a pond edge suits it well. Avoid shade from buildings or bigger trees. The tree also grows fairly tall, so it needs open room overhead, and a larger yard fits it better than a narrow strip beside pavement. It tolerates acidic soil and extreme cold, so those need no special fixing.
In the first year, water often during dry spells, but don’t let the roots sit in standing water. Keep grass and weeds back so the seedling gets light. And don’t panic when it drops its needles in its first fall.
Threats to Tamarack Forests
The eastern larch beetle once caused short outbreaks only after trees were stressed.50ScienceDirect / Academic Press. Bark Beetle Management, Ecology, and Climate Change – Chapter 9: Eastern larch beetle, a changing climate, and impacts to northern tamarack forests A Minnesota outbreak that began in 2001 lasted at least 17 years and hit over 40% of the state’s tamarack forests.51silvlib.cfans.umn.edu. What Is a Tamarack Tree? Identification and Uses Warmer temperatures and longer growing seasons appear to be fueling longer outbreaks.52ScienceDirect / Academic Press. Bark Beetle Management, Ecology, and Climate Change – Chapter 9: Eastern larch beetle, a changing climate, and impacts to northern tamarack forests Trees weakened by repeated defoliation, or growing in cold, wet permafrost bottoms, are most susceptible.53Res. Pap. PNW-RP-357. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station. 20 p. The eastern larch beetle in Alaska Tamarack can tolerate years of defoliation by the larch sawfly with limited harm.54Canadian Journal of Forest Research. Defoliation of tamarack by outbreak populations of larch sawfly in subarctic Quebec: measuring the impact on tree growth There is concern that trees are dying before producing seed for the next generation.55silvlib.cfans.umn.edu. What Is a Tamarack Tree? Identification and Uses
On your own tree, beetle trouble shows as needles yellowing or browning in summer rather than fall. Look for small holes and fine sawdust on the bark, or bark that is loosening or being stripped by woodpeckers. A local forestry or extension office can confirm the cause.